Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 23 May 2017, 10:40

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# What is the probability of getting at least one six in a

Author Message
VP
Joined: 13 Jun 2004
Posts: 1115
Location: London, UK
Schools: Tuck'08
Followers: 7

Kudos [?]: 45 [0], given: 0

What is the probability of getting at least one six in a [#permalink]

### Show Tags

13 Mar 2005, 19:10
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

What is the probability of getting at least one six in a single throw of three unbiased dice?

(a) 1 / 6
(b) 125 / 216
(c) 1 / 36
(d) 91 / 216
(e) 11 / 38
GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5045
Location: Singapore
Followers: 31

Kudos [?]: 376 [0], given: 0

### Show Tags

13 Mar 2005, 20:34
P(getting a 6) = 1/6
P(not getting a 6 on one throw) = 5/6
P (not getting a 6 on three throws) = 5/6*5/6*5/6 = 125/216

P(getting at least a 6) = 1-125/216= 91/216 <--- (D)
VP
Joined: 18 Nov 2004
Posts: 1436
Followers: 2

Kudos [?]: 39 [0], given: 0

### Show Tags

13 Mar 2005, 20:44
One 6 = 3*25/6^3
Two 6 = 3*5/6^3
Three 6 = 1/6^3

p(e) = 91/6^3
Director
Joined: 21 Sep 2004
Posts: 608
Followers: 1

Kudos [?]: 35 [0], given: 0

### Show Tags

14 Mar 2005, 15:01
atleast.. again the way i would go is "think minus 1"

P(not getting any 6 three times would be 125/216

1-125/216= 91/216
VP
Joined: 13 Jun 2004
Posts: 1115
Location: London, UK
Schools: Tuck'08
Followers: 7

Kudos [?]: 45 [0], given: 0

### Show Tags

14 Mar 2005, 17:29
OA is 91/216
14 Mar 2005, 17:29
Display posts from previous: Sort by